New back box insurance problem

[Maca44]

I am looking to change over the two rear back boxes for stainless one's but my insurance company will not amend my policy unless I tell them exactly what changes it will make to the power of the car. I didn;t think just changing those two boxes would make any difference at all so what do I tell the insurance company.

[Old Peter]

I don't think it would make any difference, Mark, unless they are sports boxes.

 

Peter.

[Raistlin]

Mark, there are a lot of myths in the boy racer community about "The size of yer pipe" and so on. Even a full-on performance exhaust system will have very little effect on output power and torque unless lots of other things are also modified to suit.

This of course is my opinion but bear in mind that I took a Rover 620 turbo from 200 to 400 bhp in the past and it took a shed-load of money, work and time :)

So, a simple mild steel to stainless steel back-box replacement will do nothing for performance, ie. no measurable power or torque increase.

In addition, I'd be a little concerned that an insurance company who were being so anal might just be looking for a way out of paying claims.

Who are the insurers please? I feel certain that I would want to avoid them.

[Guest]

What type of new boxes are you planning? Are they just standard but stainless or bigger bores etc?

[Mr Lawrence]

My powerflow boxes haven't had any affects on my policy or power, they just look nice!!

I agree with Paul, changing the boxes won't hike the hp unless induction and head work is carried out too.

Just tell the company they are a stainless replacement then as soon as you can ditch the company for a more friendly one.

[Maca44]

Thanks for reply

 

I was going to go with Powerflow with the same bore size just abit smaller boxes just to lift the sound a little.

 

The company is Post Office Insurance I have only just gone with them as the quote was £100 cheaper than Avia who I have been with for years & never had any increase due to air filter mods & Exhaust.

 

I have a feeling that Im not going to be happy with this company & yes I think they would be the sort to get out of any claim if they could fine a small reason.

[Maca44]

My powerflow boxes haven't had any affects on my policy or power, they just look nice!!

I agree with Paul, changing the boxes won't hike the hp unless induction and head work is carried out too.

Just tell the company they are a stainless replacement then as soon as you can ditch the company for a more friendly one.

I had some brilliant Powerflow exhaust work done on my Honda Civic a few years back so want to go back to the fitter who done that work. Can you tell me how well the Powerflow system works on your Jag, does it behave well on Mway without drone etc.

[Mr Lawrence]

No noise at motorway speeds and above!

I only really hear them when I accelerate from 30/40 in fourth gear, even then it's not a problem.

Had them on my 3.0 petrol and they made a lovely burble when cruising about town but again, not too noisy at speed.

Only put them on my diesel S type because the selling garage painted the tips of the standard pipes black!!

Also there's the fact that they are virtually brand new and I only paid £75 for them!!

[Raistlin]

I was lucky enough to find a Powerflow dealer in Stafford when I was doing my Rover 620 turbo who was a real enthusiast.

 

He even trailered my car to the re-mappers workshop as my insurance company hadn't, at that time, allowed me to insure it for road use.

 

In the end my insurers put a limit of 350 bhp on it for road use and so when it was remapped to 400 bhp i was only able to try it out on the remapper's test track.

 

To be fair though, 400 bhp through the front wheels, even with a sorted suspension, transmission and brakes, was a nightmare to control so after I'd had a go, the remapper de-tuned it to 350 bhp which was altogether more useable and allowed me to legally use it for day to day driving.

[Mr Lawrence]

Rover, 350bhp and day to day driving in the same post.

Love it!!

One of the Australian Mgf owners on an mg forum I frequent posted recently about "nipping out to the doctors" 650km away!!!